can: ti hecc module : add platform specific initialization callback.
CAN module on AM3517 requires programming of IO expander as part
of init sequence - to enable CAN PHY. Added platform specific
callback to handle phy control(switch on /off).
Signed-off-by: Sriramakrishnan <srk@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index b861cd5..0c3d2ba 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -28,9 +28,11 @@
* .mbx_offset = 0x2000,
* .int_line = 0,
* .revision = 1,
+ * .transceiver_switch = hecc_phy_control,
* };
*
- * Please see include/can/platform/ti_hecc.h for description of above fields
+ * Please see include/linux/can/platform/ti_hecc.h for description of
+ * above fields.
*
*/
@@ -220,6 +222,7 @@
u32 tx_head;
u32 tx_tail;
u32 rx_next;
+ void (*transceiver_switch)(int);
};
static inline int get_tx_head_mb(struct ti_hecc_priv *priv)
@@ -317,6 +320,13 @@
return 0;
}
+static void ti_hecc_transceiver_switch(const struct ti_hecc_priv *priv,
+ int on)
+{
+ if (priv->transceiver_switch)
+ priv->transceiver_switch(on);
+}
+
static void ti_hecc_reset(struct net_device *ndev)
{
u32 cnt;
@@ -818,10 +828,13 @@
return err;
}
+ ti_hecc_transceiver_switch(priv, 1);
+
/* Open common can device */
err = open_candev(ndev);
if (err) {
dev_err(ndev->dev.parent, "open_candev() failed %d\n", err);
+ ti_hecc_transceiver_switch(priv, 0);
free_irq(ndev->irq, ndev);
return err;
}
@@ -842,6 +855,7 @@
ti_hecc_stop(ndev);
free_irq(ndev->irq, ndev);
close_candev(ndev);
+ ti_hecc_transceiver_switch(priv, 0);
return 0;
}
@@ -903,6 +917,7 @@
priv->hecc_ram_offset = pdata->hecc_ram_offset;
priv->mbx_offset = pdata->mbx_offset;
priv->int_line = pdata->int_line;
+ priv->transceiver_switch = pdata->transceiver_switch;
priv->can.bittiming_const = &ti_hecc_bittiming_const;
priv->can.do_set_mode = ti_hecc_do_set_mode;